x+90+2x-21=180

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Solution for x+90+2x-21=180 equation:


Simplifying
x + 90 + 2x + -21 = 180

Reorder the terms:
90 + -21 + x + 2x = 180

Combine like terms: 90 + -21 = 69
69 + x + 2x = 180

Combine like terms: x + 2x = 3x
69 + 3x = 180

Solving
69 + 3x = 180

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-69' to each side of the equation.
69 + -69 + 3x = 180 + -69

Combine like terms: 69 + -69 = 0
0 + 3x = 180 + -69
3x = 180 + -69

Combine like terms: 180 + -69 = 111
3x = 111

Divide each side by '3'.
x = 37

Simplifying
x = 37

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